Blacktron Enterprises All-Terrain Transport, the 6876-2 ATT. It went through many prototypes before arriving at its most practical version. It was based around the 6876-1 Alienator chassis which was a sandslider type of transport. But for the Mars mission, we need something that can negotiate the rambling and varied landscape of Mars. There was a flyer version of this model before pursuing the design path of making a walker out of a former slider design. The aircraft designing were redesignated to another project.